C.  
Procedure

 S 014-018
 (1) Open the center tank access door, 134AZ (AMM 28-11-02/401).
 S 944-002
 WARNING: OBEY THE FUEL TANK ENTRY PRECAUTIONS (AMM 28-11-00/201).
_______ FAILURE TO OBEY THE FUEL TANK ENTRY PRECAUTIONS COULD CAUSE INJURY OR DAMAGE.
 (2)  
Obey the fuel tank entry precautions (AMM 28-11-00/201).

 (3)  
Go into the center fuel tank.

 S 014-004

 (4)  
Remove the applicable baffle doors to get access to the float drain valve.

 S 034-005

 (5)  
Hold the float drain valve and remove the bolts and the washers from the float drain valve.

 S 014-003
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-13-03
 ALL  ú ú 01 Page 401 ú May 28/99

A

757 MAINTENANCE MANUAL
FLOAT DRAIN VALVE SEE A
CENTER TANK ACCESS DOOR, 134AZ
FAYING SURFACE SEAL
CENTER FUEL TANK
A  VENT STRINGER DOOR 
FLOAT DRAIN VALVE 
BOLT  A  FWD  INBD 
FLOAT 
A FLOAT DRAIN VALVE  BOLT 
FAYING SURFACE SEAL  A-A  WASHER SEAL FLOAT DRAIN VALVE 
Float Drain Valve Installation Figure 401 

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-13-03
 ALL  ú ú 01 Page 402 ú May 28/99

A

757 MAINTENANCE MANUAL
 S 024-009
 (6) Remove the float drain valve.
 TASK 28-13-03-404-006
 3. Install the Float Drain Valve (Fig. 401)
_____________________________
 A. Consumable Materials
 (1)
A00248 Sealant - BMS 5-26 Type II Class A-1/2

 (2)
A00249 Sealant - BMS 5-26 Type II Class A-2

 (3)
A00250 Sealant - BMS 5-26 Type II Class B-1/2

 (4)
A00251 Sealant - BMS 5-26 Type II Class B-2

 B.
References

 (1)
AMM 28-11-00/201, Fuel Tanks

 (2)
AMM 28-11-02/401, Center Tank Access Door

 (3)
AMM 51-31-01/201, Seals and Sealing

 C.
Access

 (1)  
Location Zones
 133 Wing Center Section (Left)
 134 Wing Center Section (Right)

 (2)  
Access Panel
 134AZ Center Tank Access Door (Right)
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：757 AMM 飛機維護手冊 燃油 CHAPTER 28 - FUEL 2(28)